3 cm³ of aluminum weigh 8.1 g. calculate the weigh of 10 cm ³ of aluminum

For how answer my question this will be the last question can you answer in math subject

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).